CAM FOLLOWER WITH AN ANGLED AXIS OF ROTATION
World Intellectual Property Organization Patent
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Abstract
The invention relates to a rotary drive member comprising a longitudinal axis (8) defining a length direction, a curved cam contact surface (12) forming a closed contour around the longitudinal axis and extending in the length direction and a reciprocating member (4) having a carrier (5) movable in the length direction. At least one cam follower wheel (7) is rotatably mounted on the carrier via a cam follower axis (6) that extends in a direction transverse to the length direction. The wheel has a wheel contact surface engaging with the cam contact surface (12)for rolling along the cam contact surface and driving the cam contact surface in rotation around the longitudinal axis (8). The cam follower axis (6) is oriented at an angle α with respect to the transverse direction for removing play between the wheels and the cam surface and preventing of jamming. In the event of axial loads on the rollers, no radial forces will be induced on the carrier.A fluid supply duct (28) extends through the cylindrical body and connects a fluid pressure source to a space between the transverse end part and ring-shaped wheel for axially displacing the cylindrical body relative to the wheel.In this way an optimal contact force between the wheel surface and cam is obtained.A fluid supply duct (25,28) extends through the cylindrical body (15) and connects a fluid pressure source to a space between the transverse end part (17) and the ring-shaped wheel (7) for axially displacing the cylindrical body (15) relative to the wheel (7). In this manner easy and accurate adjustment of the axial position of the cam follower wheels is achieved.
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